<div class="panel panel-default loginPanel">
    <div class="panel-heading">登录AA顺风车后台管理系统</div>
    <div class="panel-body">
        <form>
            <div class="form-group">
                <label for="username">用户名</label>
                <input type="text" class="form-control" id="username" placeholder="用户名">
            </div>
            <div class="form-group">
                <label for="password">密码</label>
                <input type="password" class="form-control" id="password" placeholder="密码">
            </div>
            <button type="submit" class="btn btn-default btn-block">登录</button>
        </form>
    </div>
</div>